Question

Find the equation of the line in y=mx+b form with slope 3 that passes through the point (5,19)

Answer 1

Point slope form:
we need a point (x₀,y₀) and the slope (m).
y-y₀=m(x-x₀)

In this case:
m=3
(5,19)

y-19=3(x-5)
y-19=3x-15
y=3x-15+19
y=3x+4

Answer: y=3x+4